EP1001652B1 - Egaliseur automatique pour haut-parleur - Google Patents

Egaliseur automatique pour haut-parleur Download PDF

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Publication number
EP1001652B1
EP1001652B1 EP99203796A EP99203796A EP1001652B1 EP 1001652 B1 EP1001652 B1 EP 1001652B1 EP 99203796 A EP99203796 A EP 99203796A EP 99203796 A EP99203796 A EP 99203796A EP 1001652 B1 EP1001652 B1 EP 1001652B1
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EP
European Patent Office
Prior art keywords
digital
loudspeaker
filter
digital data
response
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99203796A
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German (de)
English (en)
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EP1001652A3 (fr
EP1001652A2 (fr
Inventor
Rustin W. Allred
Jr. Robert S. Young
Michael Tsecouras
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Texas Instruments Inc
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Texas Instruments Inc
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Publication date
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Publication of EP1001652A2 publication Critical patent/EP1001652A2/fr
Publication of EP1001652A3 publication Critical patent/EP1001652A3/fr
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Publication of EP1001652B1 publication Critical patent/EP1001652B1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/16—Automatic control
    • H03G5/165—Equalizers; Volume or gain control in limited frequency bands
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G5/00—Tone control or bandwidth control in amplifiers
    • H03G5/005—Tone control or bandwidth control in amplifiers of digital signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/001—Monitoring arrangements; Testing arrangements for loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Claims (3)

  1. Procédé destiné à générer des données numériques de mesure logarithmique - intégrale totale destinées à caractériser les performances perçues d'une enceinte, caractérisé en ce qu'il comprend les étapes consistant à :
    fournir des premières données numériques de N échantillons pour une courbe de réponse désirée de niveau sonore en fonction de la fréquence dudit haut-parleur ;
    fournir des secondes données numériques de N échantillons pour une courbe de réponse actuelle de niveau sonore en fonction de la fréquence dudit haut-parleur ; et
    générer des données de mesure logarithmique - intégrale totale selon la formule : M = ∑ i = 1 N - 1 log 10 ⁢ f i + 1 f i ⁢ S ⁢ f i dB - D ⁢ f i dB + S ⁢ f i + 1 dB - D ⁢ f i + 1 dB 2
    Figure imgb0021
    où :
    M représente la mesure logarithmique intégrale totale,
    f représente la fréquence,
    D représente les premières données numériques,
    S représente les secondes données numériques, et
    N représente le nombre d'échantillons des premières données numériques et des secondes données numériques.
  2. Programme informatique comprenant un code de programme informatique apte à exécuter toutes les étapes de la revendication 1, lorsque ledit programme est exécuté sur un ordinateur.
  3. Programme informatique selon la revendication 2, incorporé dans un support pouvant être lu par un ordinateur.
EP99203796A 1998-11-13 1999-11-15 Egaliseur automatique pour haut-parleur Expired - Lifetime EP1001652B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/191,944 US6721428B1 (en) 1998-11-13 1998-11-13 Automatic loudspeaker equalizer
US191944 1998-11-13

Publications (3)

Publication Number Publication Date
EP1001652A2 EP1001652A2 (fr) 2000-05-17
EP1001652A3 EP1001652A3 (fr) 2007-11-28
EP1001652B1 true EP1001652B1 (fr) 2009-11-25

Family

ID=22707568

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99203796A Expired - Lifetime EP1001652B1 (fr) 1998-11-13 1999-11-15 Egaliseur automatique pour haut-parleur

Country Status (7)

Country Link
US (1) US6721428B1 (fr)
EP (1) EP1001652B1 (fr)
JP (1) JP2000152374A (fr)
KR (1) KR100679597B1 (fr)
AT (1) ATE450119T1 (fr)
DE (1) DE69941663D1 (fr)
TW (1) TW503668B (fr)

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Also Published As

Publication number Publication date
US6721428B1 (en) 2004-04-13
DE69941663D1 (de) 2010-01-07
EP1001652A3 (fr) 2007-11-28
ATE450119T1 (de) 2009-12-15
KR20000047624A (ko) 2000-07-25
JP2000152374A (ja) 2000-05-30
EP1001652A2 (fr) 2000-05-17
KR100679597B1 (ko) 2007-02-08
TW503668B (en) 2002-09-21

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